After doing some research, the code that I have come up with is this:

var outUrl;

// first get the windowid

chrome.windows.getCurrent(function(window) {

    // then get the current active tab in that window

    chrome.tabs.query({

        active: true,

        windowId: window.id

    }, function (tabs) {

        var tab = tabs[0];

        document.write(tab.url)

    });

});

This is in a javascript file which is called from my popup html file. It does not, however display the URL of the current website, instead it displays nothing.

I have found multiple posts about this on this and other websites but I haven't been able to implement any of the supposed solutions.

Any help would be greatly appreciated.